a = 'Python'
b = "Python"
c='''Python'''
print(a,id(a))
print(b,id(b))
print(c,id(c))

s1 = 'abc%'
s2 = 'abc%'

print(s1 == s2)
print(s1 is s2)

s3 = 'abc'
s4 = 'ab' + c
s5 = ''.join([''])